Gynecomastia, otherwise known as man boobs (or moobs for short), is a condition that affects approximately 33% to 41% of men between the ages of 25 and 45. It's even more common during puberty, affecting 60% of 14-year-old boys. Interestingly, it also affects 55% to 60% of men aged 50 and older.

Although most cases of gynecomastia resolve spontaneously within a few months to a few years, in 2012 nearly 23,000 people underwent surgery to correct the condition. According to the American Society for Aesthetic Plastic Surgery (ASAPS), it was the fifth-most common cosmetic surgery in men.